Quote Originally Posted by David J View Post
I have just removed the gearknob from the car, it is the Beta S1 type. I believe the thread to be M10 x 1 (fine thread)

It has metal thread insert for wood as shown below.

https://www.ebay.co.uk/itm/M4-M5-M6-...-/153044832859

David
Ha! That explains a lot.. The insert on mine must be seized on the gearstick thread! It's been that way for 40 years!

Guy